Electric cash-register.



C. BQFQSTER.

ELECTRIC CASH, REGISTER.

APPLIGATION FILED MAY 31, 1907.

Patented Apr. 4, 1911.

4 SHEETS-SHEET l.

C. B. FCfiTHR,

ELECTRIC CASH REGISTER.

APPLIGATIQN FILED MAY 31, 1907.

l/Vwmwoco G. B. FOSTER. ELECTRIC CASH REGISTER. APPLICATION mum MAY 31,1907.

Patented Apr. 4, 1911.

THE.

' ELEGTRIQG S REGISTER. APPLICATION FILED MAY 31; 1907.

Patents .4, 1911.

v g @f SHEET 4.

UNITED STATES PATENT oEE c CLARENCE B. FOSTER, F DAYTON, OHIO, ASSIGNORTO THE NATIONAL CASH REGISTER COMPANY, OF DAYTON, OHIO, A CORPORATICN OFOHIO, (INCORPORATED IN 1SC6.)

ELECTRIC CASH-REGISTER.

Application filed May 31, 1987.

State of Ohio, have invented"certain new and 'usetul Improvements inElectric Cash- Reg1sters,*.ot which I declare the following to be afull; clear, and exact description.

This invention relates to improvements in recording machines and hasmore particular relation to that class of recording machines shown anddescribed in pending United States application Serial No. 359,790, filed*IIFeb. 28, 1907 by Joseph P. Clealwherein a {plurality of banks orcontrolling keys are coach provided with a traveling rack bar,

electrically operated forward and backward a, predeteri'mned distancetosend a predetermined number 0t electrical. impulses to a 1 recordingmachine which is distantly located ing whereby the use of one wirebesides acommon return wire will be sutlicient for any number of banksof controlling keys, whereas heretofore one wire foneach sepa rate bankhas been considered the minimum in this class of machines.

Another object is to provide a system of relays in the main circuit tocontrol a s0- called bank selector which is advanced step by step to setthe recording mechanism so that the impulses from'each bank of controlling keys will be utilized by it own individual receiving mechanism.I

With these and incidental objects in view the invention consists incertain novel features of construction and combination of. parts theessential elements of which are set forth in appended claims and apreferred form of embodiment of which is hereinafter described withreference to the drawings which accompany and form part of this"specification.

. anism, and 4 is adiagram of the electric Specification of LettersPatent.

.ing rack relays, will be operated.

Patented Apr. 4, 1911.

serial No. 35 6.699.

circuits. Fig. 5 is a top plan View of the keyboard. I

There is herein shown only a recording device but it is to be understoodthat it could very easily be converted into aregistering and indicatingdevice or a combinationof all three and that the use of all of thesespecies of accounting devices is regarded as 'vv'it-hin the scope of theinvention.

In the drawings forming part of this specification there is shown. onlyone bank of keys and: devices operated thereby, but the wiring diagramexcepting that. for the recording mechanism is shown applied to twobanks, it being:understood that in practice a greater number will beused, all of which are however, exact duplicates of those shown.

Banks of keys are provided, the inner ends of which when depressed areadapted to be in the path of longitudinally sliding bars. The depressionof my key of the bank serves to close a circuit through one of a pair ofsolenoid magnets which serves to drive the longitudinal bar referred toin one direction to an extent dependent on the key depressed. Vhen thedesired movement has been. completed in one direction the circuitthroughthe solenoid magnet as described is broken and a second circuit is madethrouLh the other of the pair of solenoid magnets above referred to,which serves to return the longitudinal slide to its normal positionwhen the second circuit is brokenin its turn. By means of a pair of makeand. break con tacts operating with said longitudinal lidfe, impulsescorresponding in number to thevalue of the key depressed are sent to therecording machine to be utilized to set the printing rackscorrespondingly.

To accomplish the object ofthis invention polarized relays are employedto operate the difi'erent devices in the recording machine. T hearmatures of the relays which are used to operatethe printing racks andthe motor switch. of the recording machine are polarizedfor the northpole and will be attracted by their relays when a current is. passedthrough said relays in one direction, but will not be attracted when acn'r'rent otthe' reverse direction is used. The armature of the bankselector operating inagnet is polarized- 'for the south pole sov'thatsaid magnet. when connected in parallel with th key depressed withoutadecting the bank selector magnet; then by sending a current of thereverse direct on-over the same lines (using the common return wire forthe posi tive side of the battery) the bank selector magnet will beenergized to operate the bank selector mechanism without afi'ect- I ingthe printing rack relays.

Referring to Fig. 1 it will be seen that there is provided a bank ofkeys 10 numbered from one to nine inclusive which are adapted to beseparately depressed and pins l1 carried thereby serve to move a detent12 provided with slots '13 for locking the key in depressed position. Tothis end the detent 12 is mounted on parallel arms 1a and 15 pivoted tothe key frame. The arm 15 has an arm 16 extending rearwardly from itspivot and adapted to be engaged by a bell crank latching pawl 17 tolatch the detent 12 and the operated key in their operated position. Thelatching pawl 17 is pivoted to the frame of the machine and has on itsrearwardly extending portion a laterally extending pin 18 which when akey is depressed will assume a position like that shown in dotted linesin Fig. 1.

Pivoted at 20 on an upward extension of a sliding rack bar 23 is aspring trip pawl having at its forward end a laterally extending beveledflange projection 19 and-- also having a downwardly extending heel 21which abuts the edge of the upward extension of the rack 23. Between theheel 21 and V beveled flange 19 will cam the pin 18 downward and forcethe bell crank pawl 17 from under the projection 16 of the arm 15,thereby releasing the detent l2 and the depressed key, both of whichwill be restored to their normal positions by their respective springs.The heel 21 .on the return of the rack 23 abuts against the upwardextension of said rack 23 and prevents the trip pawl from swinging onits pivot during the camming downward of the pin 18. The arm 16 of thearm 15 also serves to operate series of conpressed, the object of whichwill behereinafter explained.

The rack 23 is mounted and slides upon two pins 24 attached to theframework of the machine. \Vhen a key is depressed, the

cletent 12 which as before stated is rocked on the parallel armsl i and15, and, the pin- 290 strikes the upper end of a vertical plate 31 anddepresses the same slightly. This plate is longitudinally extended atits lower end as indicated at. 32 is carried by parallel will be seenfrom the direction of the parallel arms 33 and 34 and finally thedepending projection of the slide 39 passes over the projection 38 ofthe plate 31 and locks the same in depressed position. The extension 32of the plate 31 has a fiber flange 44 on which is mounted a pin 45. Inthe normal position as shown in. Fig. 1 the pin 45 engages and slightl"elevates the contact spring 46 and the ange 44 is directly over k andslightly depresses the contact spring 47, the third contact spring 48 1sprovided directly .under the spring 47 and all of the three springsmentioned are insulated from each other and mounted on a standard 49.lVhentheden'ression of the ke 10 moves the extension 32 of the plate31ownward, the spring t? being under the flange M will also be moveddownwardly into contact with spring 48 and a circuit will then be closedthroughdriving solenoid magnet 51. This magnet is mounted on a standardfrom the machine frame and attracts its core 52 between which and thecore of a companion solenoid magnet is mounted a toothed rack 53. By atrain of gears 54;, 55 and 56 the movement of the rack is transmitted tothe sliding rack23. A retarding device consisting of a star wheel 58mounted upon the shaft of a gear wheel 5% is adapted to be engaged bythe jaws 57 of a-swingle 59 pivoted at 60 and having a downwardextension 61 on either side of which is mounteda conmression spring 62.

When the keys 10 are depressed their lower ends are in the path ofmovement of the slide 39 so that some one of the steps 63 thereoffinallyengage a depressed key. When this happens the continued forwardmovement of the slide 23 will notbe able to carry slide 39 with it, butthe slide will retacts (see Fig. 1) each time a key is demain stationaryso that projection 38 of the extension 32 of plate 31 has a relativemovement forward as compared with slide 39. The projection 38 willfinally pass for-S ward of slide 39, the spring 42 will then rock theparallel arms and 34 and as flange 44 will then move upwardly thecontact spring 47 will move away from spring 48 thereby finally breakingthe circuit of It will be remembered solenoid magnet 51. that contactspring 46 is under slight tension tending to move it downwardly so thatwhen the pin 45 on flange 44 movesdownwardly the spring 46 will alsomove but as spring 47 moves downwardly to the same extent no contactwill then take place. When. however, the plate 31 is raised by contactof a depressed key with slide 39, the spring 47 will also raise finderits own tension and be brought in contact with the spring 46 as theflange 44 is in its forward position and the pin 45. is out of positionto hold up thespring. This closing of contacts 46 and 47' serves toenergize the second solenoid magnet '71 which is adapted to return theslide 23 to its normal position. lVith this object mechanism preciselvsimilar to the mechanism described in connection with magnet 51 isprovided, the same consisting of a core 72 which as before stated isattached to the" toothed rack 53.

It will be seen that when springs 46 and'47 are brought into' contact,that slide 23 will be returned to normal position and when such positionis reached, pin 45 on flange 44 will engage contact spring 46 and moveit away from spring 47, thereby finally breaking the circuit ofsolenoidmagnet 71 and stopping the entire mechanism in normal position. Totransmit the differential movement of the various slides 23 to therecording mechanism a series of contacts 111 and 112 are provideddirectly under the flanged lower part of the extension 32 on plate 31.These springs 111 and 112 are insulated from each other and carried instandard 49 and normally the scallops 11.3 are entirely out ofcontactwith the said springs. When, however, the arms 33 and 34 arerocked and the plate 31 descends the scallops will be depressed farenough so that the. projections thereof will engage the upper end of thecontact spring 112 and depress it to contact with spring 11.1. It willtherefore be seen i that as the slide 23 moves forwardly'a succession ofcontacts of springs 111 and 112 will be made depending upon "the extentof movement of said slide as controlled by the I particular key whichhas been depressed.

segments 123 pivoted upon a. shaft 124'and having ratchet. teeth 125formed thereon,

" Mounted on a shaft 126 are arms 127 carry ing at their outer endsspring awls"128 which engage ratchet teeth 125 to advance the segments.123 and through them the? slides 120 step by step. Secured to the arms127 are armatures 129 of magnets 130. A spring 131 tends to force thearms 127 up; ward against a stop rod 132. From the above description itwill be seen that each time one of the magnets 130 is energized itscorresponding rack 120 will be advanced one step. Upon the forward upperedge of the racks 120 are formed type 133 from naught to nine inclusive.A pin 134 carries a supply roll of blank paper 135 which is drawn overtwo guide pins 136 to a storage roller 13? which is provided with atoothed wheel 138. A feed pawl 139 is attached to the platen arm 140 andis adapted to feed the strip forward a short distance at each operationof said platen arm. A retaining pawl 141 is provided to prevent backwardmovement of said toothed wheel 138. A gear 142 transmits the movement ofthe wheel 138 through gear 143 to the roller 144 over which and threeguide rollers 145 the ink ribbon 146 passes. The printing platen 147 isforced against the type to take an impression therefrom by a spring 148but isnormally held restrained by a cam 149 mounted upon a driving shaft150. When the shaft 150- is rotated in the direction of the arrow inFig. 2 the platen arm 140 will be released and the spring 148 will forcethe platen 147 against the type as'before stated. A series of springactuated pawls 151 engaging teeth 151 of racks 120 are pivoted on ashaft 152 and extend rearwardly as at 153 into the path of a bar 154which is also pivoted on. a shaft Atone end of shaft 152 the bar has anextending arm 155 carrying an ant-1- friction roller 155 adapted to beoperated upon by the cam edge of a cam disk 156. Fron this constructionit will be seen that the racks and segments 123 are pre vented fromretrograde movement during the return ofthe pawls 128 over the face ofthe ratchet teeth and that as soon as the shaft is started the arm willbe cammed downward to elevate the bar 154 and positively lock the pawls151 into the teeth of the racks 120. Two slides are provided one at eachside of the machine which carry a restoring rod 161 which abuts the rearedge of the operated racks 120 to restore them to normal position. Saidrestoring rod 161 is operated by an arm 162 which is pivoted to theframe work of the machine and has connected thereto a link 163 which isprovided with an antifriction roller 164 extending into the cam slot 165of the cam156. I

The timing of the above described mechanism is as. follows: When theshaft 150 is rotated 'inthe direction of the arrow (see Fig.- 2) theroller 155 is immediately cammed downward to force the bar 151 upwardagainst all of the projections 153 of the alining and locking pawls 151thereby locking the printing racks and the bank selector slide in theirset positions. The cam 1&9 will now release the platen arm H0 and animpression will be taken from the type 133. The locking pawls will nowbe released and the restoring rod 161 will be operated to restore alloperated racks and the slide 170 to their normal position. As asafeguard against displacement from their normal position during thereturn of the restdring rod the rack 120 and slide 170 are again ldckeduntil the cam 156 is rotated to its home position. During the secondhalf of the revolution of the shaft 150 the printing platen arm 110 iscammed to its a slide 170 (see Fig. 2 which is a part ofthe so calledbank selector This slide is different, from the slides 120 in that it isshorter and has no printing type on its upper edge. It also has a lessnumber of operating and alining teeth and is provided with a downwardlyextending contact maker 171 which is insulated from the body of saidslide. The operating mechanism'for this slide is exactly the same asthat for the printing slides 120 excepting that its arma ture 212 (seeFig. 1) is polarized for the opposite pole as compared with thearmatures 129 of the printing rack operating mechanism. Mounted upon theside frame of the machine and insulated therefrom is a series ofcontacts 172 and a continuous contact 17 3 over which the contact maker171 travels.

' The object of this mechanism is to complete a circuit to each one ofthe operating magnets 130 successively. The means for driving the shaft150 '18 shown 111 Fig. 3 and consists of a motor 175 connected by atrain of gears 176 to said shaft. Mounted on shaft 150 is a stop disk177 having a notch 178 out in its periphery adapted to be engaged by anarm 179. This arm is pivoted at 180 and has a fiber roller 181 mountedthereon for operating a pair of spring contacts 182 which are includedin the motor circuit. Normally Spring pressed against the face of thearm 17 9 is a spring pawl 183 which is loosely pivoted on the shaft 150and is adapted to be forced by its spring into the path of the arm 179when said arm is operated to prevent the arm 179 from re: turning to itsnormal position until the shaft 150 'has made a complete revolution. Apin 181 carried by the disk 177 limits the 'disk. 177 to its normalposition form a stop for the disk 177.

contacts 202 and 203 and hold them closed also raise said lattercontacts, and the folwill be parted, contacts 206 and 207 will be 7initial movement of the pawl 183. The arm 179 extends forward of itspivot and has mounted thereon an armature 185 which is polarized for thesame pole as the armatures 129 of the magnets 130 are. Magnet 186 isenergized to attract its armature 185 and release shaft 150 and thenoperate the spring contacts 182 to close the motor circuit. A spring187'holds the arm 179 against the periphery of the disk 17 7 so that asshaft 150 nears its home position the roller 181 will be raised fromcontact with the contact springs 182 thereby breaking the motor circuit.The arm 179 will at the same time force the pawl 183 which has rotatedwith and will Shown in Fig. 1 is a starting key 190 which is springpressed to its outer position by a spring 191 and is locked 'in itsdepressed. position by a locking plunger 192. This plunger is operatedto release the key 190 by a magnet whose armature is ivoted at 193 andextends over a in in sa'i lunger. The inner end of the 'ey 190 is aapted when depressed to close a pair of .con-. tacts 194. V

A relay 195 is shown in Fig. 1 whose armature is pivoted at 196 and isrovided with a gravity wiper pawl 197 Wl'llCh when said relay isenergized will close contacts 198 and 199 and also contacts 200 and 201momentarily, after which a rearwardly ex tending portion of saidarmature will close until the relay magnet 195 is denergized. When thearmature returns to its normal position the wiper pawl 197 will wipe bythe endof contact 198 without causing any motion of said contact.

Referringto Fig. 1 it will be seen that when a key is depressed and thearm 16 of arm 15 iselevated, said arm 16 will engage and raise contact209 and by reason of the fiber insulating piece 291 interposed betweensaid contact and contacts-207 and 20$ will lowing will result; contacts204 and 205 closed, contacts 208 and 209-will be closed and contact 209will be parted from contact 210. This series of contacts is necessaryfor the following reasons; the rack bars 23 of the different banks ofcontrolling keys are intended to operate successively beginning with thefirst bank at the right. The. relays 195 are directlyconnected to themain linesand are operated as soon as the current is allowed to reachthem so that if the main circuit is not broken just before it reacheseach of these relays they would all be operated together which wouldoausea wrong operation of the machine so the series of contacts abovementioned is provided at each bank to compel the relays 195 to opbankhas been depressed and no key de-' pressed in the dimes bank. A battery215 or other generator is provided to furnish current for the system. Akey being depressed in the cents bank the contacts 204 to 210 will be inthe position shown and the contact spring 47 in contact with spring 48as will be remembered and after the starting key 190 is depressed andlatched in its depressed position a circuit is made as follows; from thegenerator 215 through wire 216, contacts 194, wire 217,.wirc 218,contact 207, contact 206, wire 219, contact 47, contact 48,- wire 220,solenoid magnet 51, wire 221, contact 208, contact 209, wire 222, wire223, back to the generator. This it will be remembered serves toenergize the mag- 'net 51 to move the rack 23 forward until slide 39strikes a depressed key. Vhen slide 39 abuts the key, contacts 47 and 48will be parted and contact 47 will be thrown into connection withcontact 46. the returning; circuit is then complete as follows:generator 215, wire 216. contacts 194. wire 217, wire 218, contact 207,contact 206, wire 219, contact 47, contact 46, wire 224, solenoid magnet71, wire 225, wire 221. contact 208, contact 209, wire 222, wire 223back to the generator. As the scalloped plate moves over the contacts111 and 112 they will be brought to-- the will 215, 21-8, 226,

gether a number of times depending on key depressed and the recordingcircuit then be complete as follows: generator wire 216, contacts 194,wire 217, wire contact 207, contact 206, wire 219, wire contact 112,contact 111, wire 227, wire wire 229, wire 230 to magnet 130 of therents printing rack, wire 231 to first individual contact piece 172,contact maker 171, continuous contact 173, wire 232, bank selector,magnet 233, wire 234, wire 235, wire 221, contact 208, contact 209, wire222, wire 223 back to the generator. This will advance the centsprinting rack proportionately to the key depressed but will not operatethe magnet 233 because the armature 212 of said magnet is polarizedoppositely to wire 217 wire 218, contact. 204, contact 205, wire 236,wire 237, wire 238, relay 195, wire 239, wire 240, wire 24]., contact210, contact- 209, wire 241', wire 222, wire 223 back to the generator.This circuit will energize the relay 195 and as before explained willmake a momentary contact between contacts 198 and 199 and contacts 200and 201. '1 his will close a circuit to the bank selector as follows;generator 215, wire 216, contacts 194, wire 217, wire 218. contact 204,contact 205, wire 236, wire 237, wire 242. contact 198,

contact 199, wire 243, wire 234, to bank selector magnet 233, wire 232,continuous contact 173, contact maker 171, first individual contact172,-wire 231, first magnet 130, wire 230, wire 229, wire 228, wire 244,contact 201, contact 200, wire 245, wire 241, contact 210. contact 209,wire 222, wire 223 back to the generator. Thus it will be seen that themomentary closing of contacts 198 to 201 cause an impulse to be sent tothe recording machine in a reverse direction to those sent by thecontacts 111 and 112. This as before stated causes the magnet 233 to beenergizedto advance the rack 170 forward and causes the contact maker171 to make contact between the continuous contact 173 and the secondindividual contact 172. 7

Immediately after the bank selector is operated through the'closing ofthe contacts 198 to 201, the armature of relay 195 closes contacts 202and 203 thereby completing a circuit to the next bank which if a key insaid bank were depressed would be a dupli cation of the circuit for thepreviously eitplained bank, but as no key has been depressed (for sakeof illustration) circuit will he made as follows: generator 215, wire216, contacts 194, wire 217, wire 218, contact 204, contact 205, wire236. wire 237, wire 242, contact 202, contact 203, wire 246, wire 247,wire 248, contact 204, contact 205, wire 249, wire 250, relay 195, wire251, wire 252, wire 253, contact 210, contact 209, wire 253 wire 254,wire 240, wire 241, contact 210, contact 209, wire 222, wire 223 back tothe generator. This circuit will close the re lay 195 and by momentarilyclosing the contacts 198 and 199 andthe contacts 200 and 201' to closethe circuit to the bank selector as follows: generator wire 216,contacts 194, wire 217, wire 218, contact 204, contact 205, wire 236,wire 237, wire 242, contact 202, contact 203, wire 246, wire 247, wire248, contact 204, contact 205, wire 249, wire 255, contact 198, contact199. wire 256, wire tinuous contact 173, contact maker 171', secondindividual contact 172, wire 261, to magnet; 130 of the dimes bank, wire262, wire 229, wire 228-, wire 258, wire 259, contact 201, contact 200,wire 260, wire 253, contact 210', contact 209, wire 253", 'wire 257,wire 234, to bank selector, magnet 233, wire 232, con- 254;, wire 240,wire 2 11, contact 210, contact 209, wire 222, wire 223 back to thegenerator. This will operate the bank selector in the same manner asheretofore explained. The operation as explained in connection with. thetwo banks shown will be repeated for as many banks as there are banks ofcontrolling keys 10. The relay for the last bank will advance thecontact maker 171 to the last individual contact 172 which is connectedto the starting magnet 180.

Immediately after the bank selector is operated by the relay of thelast. bank, a circuit the same the one which will now be explained,excepting that it will haveto pass through as many series of contacts204; to 210 as there are banks of keys 10 and number of printing racks120 will be made to permit the current to energize a starting re lay265., This circuit includes generator 215, wire 210, contacts 19%, wire217, wire 21S, contact -t, contact 205, wire 236, wire 28?, wire 212,contact 202, contact 203, wire 2 6, wire 25, wire 218, contact 201',contact 203, wire 249, wire contact 202, contact 20?), wire 20ll wire20?. wire 20R, relay 2G5. wire 20ft. wire 2T0. wire 252 wire contact210', contact 200, wire 253, wire 254-, wire 240, wire 2-1-1. contact210, contact 200, wire 222,wire 223 back to the generator. This willenergize the relay 265 whose armature will cause a momentary closing ofcontacts 2P1 and 275 and contacts 276 and 277 making a circuit asfollows: generator 215, wire 210. contacts 19%, wire 217, wire 21S.contact 20%, contact 205, wire wire 237, wire 2&2, contact 202, contact203, wire 246. wire 24:7, wire 24S, contact 20%. contact 205, wire 2-19,wire contact 202, contact 203', wire 206, wire 207, wire 271, contact 2.-lcontact 275, wire 27S, wire 228, wire 220, wire 2S5, starting magnet1S6, wire 280. to the lastindiyidual contact 172, contact maker 171,continuous contact 173. wire magnet wire 234, wire 2T9, contact 27?,contact 276, wire 287, wire 270, wire 252, wire 253, contact 210',contact 209, wire 253, wire 254e, wire 240, wire 24:1, contact 210,contact 200, wire 222, wire baclnto the generator. This circuit willcause the magnet 180 to be energized to release the arm 170 from thelocking disk 177 (see Fig. 3) thereby releasing shaft 150 and closingthe contacts 182 which are included in a. local motor circuit asfollows; battery 290, wire 291 contacts 182, wire 292, through the motor175, wire 293, to battery. It will be noted that. after each relay isenergized its circuit remains closed until the supply of current is cutoff by the parting of contacts 1%.

Immediately after the contacts .274. to 277 are closed the contacts 272and27 are closet and a circuit will be made as follows: generator 215,wire 216, contacts 194, wire 217,

wire 218, contact 20 1, contact 205, wire 236, wire 2 37, wire 212,contact contact 203, wire 240, wire 2' wire t" ontact 204, coi'itact205, wire 21!), wire contact 202', contact 203, wire 260, wire 207, wire2T1, contact 27 3. contact 272, wire 2S0, magnet 2Q1, wire wire 223 backto the generator. This will energize the magnet 281 which will releasethe starting key 190 thereby allowing the spring contacts 191 to partand break all circuits to the machine,

The operation of the machine as described as follows: Keys as desiredare depressed and latched in their depressed position by theirrespectii'c detents. The latching of a key by its detent will operatethe series of contacts 201 to 210 to divide the main circuit and:connect the operating circuit of its bank, The depressing of a key willalso cause the contact l? to be movedinto engagement with the contactto. After the desired keys depressed, the starting key 190 is depressedand. latched in its depressed position.

Ills key will close the contacts 10$ and complete the main circuit tothe generator 215. It a key in the cents bank is depressed. theoperating mechanism of said bank will be operated as oon as the startingkey is depressed. As before explained the depressed keys are released assoon as their rack bars have returned to their normal positions. Duringthe forward movement of the bar impulses are sent to the distantrecording device to set the printing bar 120 corresponding to the numberof the key depressed. The releasing of the depressed key will releasethe series of contacts 201- to 210, thereby allowing them to assumetheir normal position. The current will now pass. on to the relay195 andclose said relay. The circuit beyond said'relay is broken by thecontacts 202 and 203. Thus it will be seen that the main circuit beyondsaid relay is not complete until after said relay is operated. hen therelay 195 is operated it causes the contacts 198 to 201 to send amomentary impulse to the recording device to operate the hank selectorto complete a circuit to opcrate the printing bar 120 of the next higherbank. Immediately after the closing of contacts 198 to 201, the contacts202 and 203 are closed to extend the main circuit to the next bank, Ifno key in the next bank is depressed contacts 204: to 210 remain intheir normal position, thereby extending the main circuit to the nextrelay. Thus it will be seen that when no key in a bank is deg'niessed.the time required for operation of the'mechanism of said bank is savedand the main circuit continues on to the next relay uninterrupted. Thissame operation is repeated througlmut all the banks. The momentaryimpulse caused by the last relay serves to complete a circuit to themagnet 180. The operation of the last relay 195 extends the main circuitto a separate relay 265. This relay is utilized to close the circuit tothe magnet 186 to release the driving device of the recording mechanismand start the motor therefor. After said motor starting circuit iscomplete the relay 265 closes contacts 272 and 27?). This will extendthe main circuit to the magnet 281 to release the starting key and breakthe main circuit. It will be seen that thereare only two wires re quiredbetween the banks of keys and the recording device, where heretofore ithas been customary to use one wire for each bank of keys and acommonreturn wire for the complete system.

lVhile the form of mechanism here shown and described, is admirablyadapted to fulfil the objects primarily stated. it is to be understoodthat it is not intended to confine the invention to the one form ofembodiment herein disclosed, for it is susceptible of embodiment invarious forms, all coming within the scope of the claims which follow.

hat is claimed is follows:

1. In a recording mechanism. the combination-with a plurality of banksof keys, of a differentially moving element for each bank of keyscontrolled thereby, means for n'ioving said elements until stopped by akey, means rendered operative when said elements are stopped forreturning said elements. and a recording device controlled by saidelements.

2. In a recording mechanism, the combination with a plurality of banksof controlling keys, of a series of differentially movable elementscontrolled by said keys. indiv-idual means for moving each of saidelements successively until stopped by a key, separately operated meansrendered operative when said elements are stopped for returning saidelements, and. a recording device controlled by said elements.

3. In a recording mechanism, the combination with a series ofmanipulative ele ments, of a recording device, means controller by saidelements for causing a differential operation of said recording device,a series of power devices for moving said means in one direction, asecond series of power devices thrown into operation by said firstseries of power devices for moving said means in the reverse direction.

4. In a recording mechanism. the combination with recording devices, ofa plurality of banks of keys controlling same, differentially movableelements for causing ope :1- tion oi. said recording devices to anextent determined by the keys, a seriesof motormechanisms for operatingsaid elements and a second series of motor mechanisms thrown intooperation by said first series for restoring said elements to their.original position.

5. In a recording mechanism the combination with a plurality of banks ofcontrolseries of printing elements, a series of separately operatedmeans for causing said elements to be'sct differentially, a series of individual motors for moving said means in one direction, a, second seriesof individual motors for moving said means in the opposite direction anda separate key effecting the operation of both series of motors.

7. In a recording mechanism. the combination with a plurality of banksof keys, of a recorder comprisinga series of printing elements. meansfor causing a differential movement of said elements depending upon the.keys depressed, a serics of motors for moving said i'ueans in onedirection and a series of motors tor returning said means to theirnormal position.

8. In a recording mechanism. the combination with a recording devicecomprising a series of printing elements. of a plurality of manipulativedevices for determining the movement. of same. a series of latching;devices for said manipulative devices. a ries of dilferentially movablemeans ..or causing operation of said printing elements. electric powermechanisms for returning said means to their normal positions, and meansdepending upon the operation of the latching devices of thei'nanipulative devices for. energizing said electric powerinecl'ianisms.

9. In arecording mechanism. the combination with recording devices, of aplurah. ity of banks of controlling k a series of diit'erentiallymovable elements for causing the operation of said recording devices.motor mechanisms for driving said elements in opposite directions. a dcircuits. for controlling said mechanisms. and themselves controlled bythe keys.

10. In a recording mechanism, thecombination with a recording devicecomprising a series of printing elements. of a plurality of banks ofkeys, a series of differentially movable means for causing the operationof said printing elements, two series of motor mechanisms for movingsaid means in opposite directions, a circuit for one of said series ofmotor mechanisms closed by the operation of the keys, and a circuit forthe other series-of motor mechanisms closed by the completion ofmovement of the differential means under control ofsaid first series ofmotor mechanisms.

11; In a recording mechanism, the combination with a recording devicecomprising under control of said first series of motor mechanisms.

12. In a recording mechanism, the combination with a recording device,of a plurality of banks of keys, a plurality of different-ially movableelements under control of said keys and causing operation of saidrecording device, a series of motors for moving said elements in onedirection until stopped by a key, a circuit controlling said series ofmotors closed by the operation of a key, a second series of motors forreturning said elements to normal position, and a circuit for saidsecond series of motors closed when said elements abut the depressedkey.

13. In a recordingmechanism, the combination with recording devices, aseries of elements for causing operation of same, a series of magnetsfor moving said elements a predetermined distance in one direction, asecond series of magnets for returning said elements to their normalpositions, and circuit for said magnets successively closed undercontrol of said elements.

14. In a recording mechanism, the combination with recording devices, ofa plurality of banks of keys for controlling same, a series of elementsfor causing operation of said recording devices, a series of motormagnets for moving said elements a predetermined distance in onedirection, a second series of motor magnets tor returning said elementsto their normal positions, and circuits for said motor magnetssuccessively closed under control of said keys.

15. In a. recording mechanism, the combination with a recording device.of a plurality of banks of keys, a plurality of difi'erentially movableelements controlling the recording device, electrically operated motorsfor operating said elements, a normally open circuit for said motors, amain circuit, a series ofcontacts for each'bank of keys for extendingthe main circuit beyond said bank, a separate means for completing themain circuit to a genera tor, and means for operating the said series ofcontacts to divide the main-,circuit and connect the motor circuittherewith.

16. In a recording mechanism, the combination with a plurality of banksof keys, a plurality t movable elements, a plurality of motors foroperating each of said elements, a

circuit toreach of said motors, a main circuit, a series of contacts foreach bank of keys for extending the main circuit, means controlled bythe depression of the keys for operating the said series of contacts todivide the main printing elements, a plurality of banks of keys,differentially movable means for oper:

jating the recording device controlled by the keys, an interruptercontrolled by said differentially movable means which completes thecircuits to tl e electric motors to energize said motors.

18. In a recording mechanism, the cwnbination with a recording devicecomprising a. plu 'ality of printing elements, electric motors andcircuits therefor for setting said ferentially movable means whichcompletes the circuits to the electric motors to energize said motors,and means for returning said printing elements to their normal posi'tion.

19. In a recordingmechanism, thc combination with a recording devicecomprisinga plurality of printing elements, electric motors and circuitstherefor for setting said printing elements, a plurality of banks ofkeys, difierentially movable means for opcrating the recording devicecontrolled by the keys, an interrupter controlled by said differentiallymovable means which com-' plctes the circuits to the electric motorstoenergize for said printing elements.

20. In a recording mechanism, the combination with a recording devicecomprising a plurality of printing elements, electric mosaid motors, andalining devices tors and circuits therefor for setting said u P nationwith a recording device comprsing a. plurality of printing elements,electric motors and circuits therefor for setting said. printingelements, a plurality of banks of keys, differentially movable means foroperating the recordingdevice controlled by the 13 keys, an interruptercontrolled by said ditferentially movable means whichcompletes thecircuits to the electric motors to energize said motors, a printingplaten and means "for feeding a paper strip and an inking ribbon at eachoperation oft-he machine.

2 2..111 a recording mechanism, the coml)inat ioii with a plurality ofprinting elements, and means for setting said printing elements, of aplurality of banks of keys for controlling said means. a movable contactments, aseries of polarized magnets for setting said printingel'ements,-of a plurality of keys controlling said magnets, a selectingdevice, a sin le polarized magnet for operating sai selecting device, acircuit'for all of the polarized magnets under control of the selectingdevice, means for causing a current to pass through said circuit in onedirection to energize the polar- .ized magnets of the printing elementswithout afiecting the selecting device operating magnet and a separatemeans for, causing a current to pass through said circuit in an oppositedirection to energize the operating magnet of the contact maker withoutatlecting the operating magnets of the printing series of motors withthe motor .circuit for all ofsaid motors,

.for. the recording device,

yond said relay magnets.

elements.

24. In a recording mechanism, the combination with a recording device, aseries of printing elements, a plurality of manipulative devicescontrolling said elements, a for said printing elements, a selectingdevice, a separate motor for operating said selecting device, a contactmaker operating with said selecting device to suecessi vely connect eachone of the series of motors for the printing elements in parallel forthe selecting device, a a circuit and the curconnections so arranged asto cause difi'ercuttimes to 4 l natelyuor successively as determined bysaid manipulative devices. I

- -2 5.-Infa recording mechanism, the combination withaiecording device,of a plurality'of-banks of keys controlling said device, a, maincircuit, a series of contacts for '6 each'bank of keys for-extending themain circuit; beyond said bank, a selecting device a series of relaymagnets for controlling said selecting device-and for extending the maincircuit be- 26. In a recording mehcanisin,

'means operated by the the com-'.-

bination with a recording device and an operating device'therefor, of aplurality of printing elements, a plurality of banks of keys,electrically operated devices controlling the positioning of theprinting elements, individual circuits for said electrically operateddevices, a main circuit, a series ofcontacts for dividing the maincircuit and connecting said individual circuits thereto, a selectingdevice for the recording device, a series of relays controlling saidselecting device, a second series of contacts for ex tending the maincircuit beyond the bank to'its corresponding relay, separate contactsfor each relay for extending the main circuit to a succeeding bank ofkeys, means for controllin the operating device of the recordingcIevice, a magnet for controlling said means, a relay for operating saidmagnet, a starting key for closing the main circuit, a releasing devicefor said key and contacts operated by the last mentioned relay forcausing operation of the releasing device of the startingkey to breakthe main circuit.

27. In a recording mechanism, the combination with controllingmechanism, comprising banks of keys, and mechanism movabledifierent-ially under control of said keys, of means rendering saiddifferentially movable mechanism inoperative, except the mechanism oflowest denomination, means operated by the final increment of movementof any difierentially movable mechanism for rendering operative themechanism of the next higher order, and recording mechanism controlledby said controlling mechanism.

28. In a recording mechanism, the combination With controllingmechanism, comprising diiterentially movable denominational devices, andbanks of keys controlling same, of means rendering said devices exceptthatv of lowest denomination inoperative, means operated by the finalmovement of any denominational device for rendering operative thedenominational devices of the nexthigher order, and distantdenominational recording devices successively operated in correspondencewith the difi'erentially movabledevices. v

29. In a recording mechanism, the combination with controlling mechanismcomprising differentially movable denominational devices, and banksofkeys controlling same, of electrical means includin circuits foroperating said denominational devices, means for normally breaking thecircuit to all said means except that of lowest order, final incrementof movement of any denominational devices for closing the circuit of themeans of next higher order, and accounting mechanism controlled by saiddenominational devices.

30. In 'a recording mechanism, the combination with controllingmechanism, com

prising banks of keys, and differentially movable denominational devicescontrolled thereby, of accounting mechanism having a differentiallymovable element for each of said devices, each of said elements beingarranged to be controlled by corresponding devices, means normallyrendering each of said elements and devices inoperative except those oflowest denomination, and means controlled by each of said denominationaldevices for rendering operative the device of next higher order.

31. In a recording mechanism, the combination with controllingmechanism, comprising banks of keys and differentially movabledenominational elements controlled thereby, of motors for each of saidelements,

-means rendering normally inoperative all the motors except those oflowest demonination. means operated by each element for renderingoperative the element of next higher order, and accounting mechanismcontrolled by said movable elements.

In a recording mechanism. the combination with a transmitting instrumentincluding denominational elements, of a distant receiving instrumentincluding denominational elements corresponding to those of thetransmitting instrument, a single electric circuit connecting thetransmitting and receiving instruments, means for controlling saidcircuit successively from the several denominational elements of thetransmitting instrument, and means for bringing the severaldenominational elements of the receiving instrument successively underthe control of said connecting electric circuit.

83. In a recording mechanism, the combination with a transmitterincluding denominational elements, of a distant receiver comprisingdenominationl elements corresponding to those of the receiver, anelectric circuit connecting said transmitter and said receiver, meansfor connecting the transmitter denominational elements successively intoa condition controlling said circuit, de-

vices for connecting the receiver elements into a condition undercontrol of said circuit, and means for automatically retaining in thereceiver an entry of transactions on the transmitter.

34. In a recording mechanism, the com bination with a transmitterincluding de nominational elements, of a receiver also includingdenominational elements, an electric circuit connecting said transmitterand receiver, local circuits controlled by the denominational elementsof the transmitter, means for successively connecting said localcircuits to said connecting circuit, and means for auton aticallybringing said receiver elements successively under control of saidconnecting circuit.

35. In a recording mechanism, the combi nation with a transmitterincluding denominational elements, of a receiver including correspondingdenominational elements, an electric connection between said transmitterand receiver, means for controlling said electric connection by adenominational element of the transmitter, means actuated by saidtransmitter element for shifting the control of said connection to asucceeding denominational element, and means for automatically bringingthe denominational elements of the receiver successively under controlof said electric connection,

36. In a recording mechanism, the combination with a transmitter, of areceiver including denominational elements, an electric connectionbetween said transmit; r and receiver, means whereby said transmittercauses impulses to pass over said connection to actuate a denominationalelement of the receiver, and devices whereby'an impulse havingcharacteristics distinct from said actuating impulses brings anotherdenominational element under control of said transmitter.

37. In a recording inechanism,-the combination witlra transmitter, oi areceiver having denominational elements, an electric connection betweensaid transmitter and one of said receiver denominational elements,meansuntler control of said transmitter for sending impulses oversaidlconnection to actuting over said connection an impulse havingcharacteristics distinct from said actuating impulses, with deviceswhereby said last mentioned impulse brings a succeeding dcnominationalelement of the receiver under control of said electric connection.

38. In an accounting mechanism, the combination with a plurality ofmovable ele ments, and means for successively actuating samedifferentially, the 'said means being under the control of saidelements.

In an accounting mechanism, the combination with a plurality of movabledenominational elements, and means for successively actuating samedifferentially, each elementcontrolling the actuation of the element ofthe nextdenomination.

40. In an accounting mechanism, the combination with a transmittinginstrument having differentially movable elements, of a receivinginstrument having corresponding elements, and a selector for theelements of the receiving instrument controlled by the elements of thetransmitting instrument.

41. In an accounting mechanism, the combination with a transmittinginstrument having dilierentially movable elements, of areceivinginstrument having corresponding elements, and a selector given a step bystep movement'by the elements of the t'ansmitting instrument forcontrolling the elements of the receiving instrument.

42. In an accounting mechanism, the combination with a transmittinginstrument having differentially movable denominational elements, of areceiving instrument having corresponding elements, and a selectoractuatedby theelements of the transmitting instrument for successivelycontrolling the elements of the receiving instrument.

44. In an accounting mechanism, the com bination with a transmittinginstrument having differentially movable elements, of a plurality ofsolenoids for actuating said elements, a receiving instrument havingelements corresponding to thoseof the trans-v mitting instrument, and amagnetically'operated selector actuated by parts ofthe transmittinginstrument for successively controlling the elements of thereceivinginstrument.

45. In an accounting mechanism, the combination with a transmittinginstrument -having differentially movable elements, of

a plurality of solenoids for actuating said elements, a receivinginstrument having elements corresponding to those of the transmittinginstrument, means including a selector for connecting the elements ofsaid instruments, and ,means controlled by' said 'movable elements ofthe transmitting instrument for intermittently actuating said selector.

46. In a recording mechanlsm, the comb1- nation with a transmittinginstrument, of a distantreceiving instrument including =de nominationalelements, means for operating said elements including a successivelyoperated circuit closer controlledby the trans- -mitting instrument, andmeans for taking an impression from said elements,- the said impressionmeans beingcontrolled by the circuit close-r.

. 47. In a recording mechanism, the combi-- nation with a transmittinginstrument, ofa distant receiving instrument including differentiallymovable type carriers, electrical 4 devices for setting said typecarriers, a con; tact maker controlled by the transmitting instrumentfor establishing circuits through said devices,-means for taking animpression from the type carriers after they are set, and a motorcontrolled by said contact maker for operating the impression means. 48.In a recording mechanism, the combination with a plurality ofdifferentially movable type carriers, of means including at circuitcloser for successively setting said type carriers, and. means fortaking an impression from the type carrier's controlled by the circuitcloser. v

49. In an accounting machine, the combination with a plurality ofdifferentially movable elements, of means for operating'said elements,and means for first locking said elements in their set position, thenrestoring them to normal position and finallyiocking them temporarily intheir. restored position.

50. In an accounting. machine, the combination with a plurality ofdifferentially movable type carriers, of means for operating saidelements, a series of alining pawls,-a cam for first locking said pawlsin engagement with the type carriers in their opera-' tive position,then restoring said carriers to normal position and finally locking thepawls temporarily in engagement with the type carriers in their restoredposition to prevent rebound of same.

51. In a machine of the class described,

the combination with a plurality of differentially movable elements, ofmeans for suc- ,cessively actuating the same during an operation of themachine,-manipulative devices for determining the extent of movement ofsaid elements, and means rendered operative by said elements when thelatter have moved their determined extent for returning said elementstonormal position.

52. In a machine of the class described, the combination with aplurality of differentially movable elements, of power devices forsuccessively actuating the same during an operation of the machine, keysfor determining the extent of movement of said elements, and additionalpower devices-rem during an operation of the machine, keys fordetermining the extent of movement of said elements, additional electricpower devices for returning said elementsto normal position, andcircuits for both of said power devices under the control of said keys.

54:. In a machine of the class described, the combination with aplurality of differentially movable elements, of electric power devicesfor successively actuating the same during an operation of the machine,keys for determining the extent of movement of said elements, additionalelectric power devices for returning said elements to normal position,circuits for both sets of power devices, and means carried by thedifferentially movable elements and controlled'by the keys for closingsaid circuits.

ing devices also mounted upon the differ entially movable elements forlocking the circuit closing plates in their operated positions, the saidlocking devices being constructed to contact with the depressed keys andbe thereliy moved to release the circuit closing plates.

In a machine of the class described, the combination with a pluralityofditl'erentially movable elements, of electric power devices forsuccessively actuating the same during an operation of the machine,depressible keys for determining the extent of movement of saidelements, additional electric power devices for returning said elementsto normal position, circuits for both sets of power devices, springdrawn plates mounted upon the ditlerentially m vable elements andoperated by the key IOl' closing the circuits through the firstmentioned power devices, locking devices also mounted upon thedifferentially movable elements for locking the circuit closing platesin their operated iositions the said locking devices being constructedto contact with the depressed keys and be thereby moved to release thecircuit closing plates, circuits for the power devices for returningthe'diflerentially movable elements established by the released circuitclosing plates, and means carried by the circuit closing plates forbreaking the lastmentioned circuits as the differentially movableelements reach normal or home position.

In testimony whereof I allix my signature in the presence of twoWitnesses.

CLARENCE B. FOSTER.

\Vitnesses 2 101' C. GLASS, CARL W. 'Bnus'r.

